| Deposit ID | 10019915 |
|---|---|
| MRDS ID | DC11924 |
| Record type | Site |
| Current site name | Jumbo Group |
| Alternate or previous names | Birch Cr Fe |
| Geographic coordinates: | -112.84256, 45.39157 (WGS84) |
|---|---|
| Elevation | 2073 |
Political divisions (FIPS codes)
Beaverhead(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Twin Adams Mountain(quadrangle 1:24,000 scale)
Dillon(quadrangle 1:100,000 scale)
Dillon(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Big Hole(hydrologic unit)
Missouri Headwaters(hydrologic accounting unit)
Missouri Headwaters(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Beaverhead-Deerlodge National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Montana | Beaverhead |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 005S | 010W | 16,21 | Montana |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Tungsten Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Magnetite | Ore |
| Powellite | Ore |
| Scheelite | Ore |
| Calcite | Gangue |
| Epidote | Gangue |
| Hematite | Gangue |
| Result | TACTITE FROM NW OF SHEEP CR ASSAYED 0.013-0.042% WO3A K2 CRET |
|---|
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||||||
| Rock unit name | Pioneer Batholith | ||||||||
| Rock description | Pioneer Batholith | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Dolomite |
| Rock unit name | Wolsey, Pilgrim |
| Rock description | Wolsey, Pilgrim |
| (1) | -112.84256, 45.39157 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | East Limb Of Humbolt Mtn Anticline, Pioneer Batholith |
| General form | SHOOTS OR LENSES |
|---|---|
| Strike | N 42 W |
| Dip | 32 NE |
| Length | 4.27M |
| Width | 4.57M |
| Depth to top | 0M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1908 |
| Production years | POST-1908. |
| District name | Birch Creek (Utopia) District |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Arley R. Jacobs, Et. Al. |
| Home office | Missoula, Mt. |
| First year | 1960 |
| Year | 1904 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1875-1904 | ||||||||||||||
| Accuracy | Estimate | ||||||||||||||
| Description | Cp_Grade: ^40-70% Fe | ||||||||||||||
| |||||||||||||||
| Type of workings | Underground |
|---|---|
| Length | 152.4M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | DC11924 |
USBM RI 5552, P. 78.
MBMG BULL 85, P. 93.
MBMG IC 13, P. 30-31.
1960 RECON U.S. BUREAU OF MINES, R.I. 5552
1972 COMPILE M.B.M.G. BULL. 85
M.B.M.G. BULL. 85, P. 93, M.B.M.G. I.C. 13, P. 31
| Subject category | Comment text |
|---|---|
| Deposit | TACTITE EXTENDS 1600 FEET AND AVERAGES 113 FEET WIDE. FOUR MAGNETITE LENSES OCCUR, THE LARGEST OF WHICH IS 14X11X15 FEET. (PATTEE, 1960) |
| Deposit | JUMBO GROUP CONSISTS OF JUMBO, INDIAN SQUAW, INDIAN CHIEF, U.S. TREASURER, AND BURCH. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1974 | Unknown | U.S. Geological Survey | |
| Updater | 01-JUL-1980 | Loen, Jeffrey S. (Pearson, Robert C.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.